Hoisting-machine



(No Model.) 2 Sheets-Sheet; 1.

W. HART.

HOISTING MACHINE.

Patented Nov. 8, 18 87.

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(No Model.) 2 Sheets-Sheet 2.

W. HART.

HOISTING MACHINE.

No. 372,908. Patented Nov. 8, 1887;

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WALTER HART, OF EAST ORANGE, NEW JERSEY.

HOISTlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 372,908, dated November 8, 1887.

Application filed September 9, 1886.

To all whom it may concern:

Be it known that I, WALTER HART, of East Orange, in the county of Essex and State of New Jersey, have invented a new and Improved Hoisting-Machine, of which the following is a specification, reference being had to disk, showingthe end of the grooved sleeve attached thereto. Fig. 5 is a detail section taken on line pp in Fig. 1. Fig. 6 is a rear end elevation of my improved hoisting-machine. Figs. 7, 8, and 9 are respectively side, end, and plan views of the shield and guard which partly encircles the clamping-disk when the hoisting-machine is in operation.

Similar letters of reference indicate corresponding parts in all the views.

The object of my invention is to provide an efficient machine for hoisting and lowering heavy bodies, and. for manipulating ropes, cables, and chains for other purposes.

My invention consists intwo disks arranged to rotate in different planes, one of the disks being beveled or coned, the other being either plain or beveled, the angles of the disks being arranged with reference to their adjacent surfaces so that one point in the surface of each disk will be parallel with thecorresponding part of the other disk, and on opposite sides of the said point the disks gradually recede from each other, so that the space between the disks increases in width to a point diametrically opposite the parallel surfaces of the disks.

To the base-plate of the machine are attached three standards, G H I. In an aperture in the standard G and in a socket, h, formed on r the top of the standard H, is j ournaled an externally-screw-threaded sleeve, E, upon which, between the standards G H, is placed a nut, F, provided with arms 9 y g 9 by which it may be turned. In the sleeve E is journaled a shaft, A, which extends through a bearing in the standard I and carries two ratchet-wheels,

K L, on opposite sides of the standard I, the

Serial No. 213,091. (No model.)

teeth of the ratchet-wheel K being oppositely disposed with reference to the teeth of the ratchetwheel L, and to the top of the standard I are pivoted pawls M N, which are oppositely arranged with respect to each other, and are adapted to engage the ratchet-wheels K L. Between the inner ratchet-wheel K and the end of the socket h a spur-wheel, Q, is secured upon the shaft A, and in a bearing, V, supported by the standard I below the bearing of the shaft A, is journaled ashort shaft, U, carrying upon its inner end a pinion, R, meshing into the spur-wheel Q, and on its outer end a spur-wheel, S, which is engaged by the spurwheel T, placed loosely on the shaft A, and arranged to receive motion either by means of a hand-crank secured to the boss of the pinion by a pulley or by any other suitable means.

'The end of the threaded sleeve E is provided with a cup, E, from the rim of which project four ears, 0 c 0 0 carrying studs upon which are placed the rollers d d at d To the extremity of the shaft A, outside of the sleeve E, is secured a disk, B, carrying a sleeve, 0, in which are formed four longitudinal grooves, a a a a A beveled disk, D, surrounds the sleeve 0, and is provided with inwardly-projecting lugs b b 1) b which fit into the grooves a a a a of the said sleeve 0, and the beveled disk D is provided with a sleeve, 0, which is grooved circumferentially to receive the rollers d d d d, supported by the ears projecting from the rim of the cup E; The ear 0 is made longer than the other ears of the series, the ear 0 is made shorter thanthe other ears, and the intermediate ears occupy intermediate positions, so that the rollers supported by the said ears hold the grooved sleeve 0 in an inclined position with reference to the shaft A, so that the disk D is made to revolve in a plane inclined to that of the plane of rotation of the disk B. The bevel of the disk D is double that of the angle of inclination of the said disk, so that the upper part of the beveled face of the said disk D is parallel with the face of the disk B; but the lower part of the disk D is inclined away from the plane of the disk B at an angle double that of the inclination of the disk D. The screw-threaded sleeve E is provided with the longitudinal groove 6, and a feather, f, projects from the ICO inner surface of the socket h into the groove e of the sleeve E. The upper end of the standard G is provided with an arm, 0, projecting over the outer end of the sleeve E, and to the said arm is pivoted a guard, P, consisting of a curved frame having arms a a, which extend downward partly around the disks B D. The guard P is held in its place by a double bolt, on m, sliding through eyes I Z Z? on the guide, and entering eyes I Z, projecting from the sides of the arm 0. By means of the nut F the screw-threaded sleeve E may be projected more or less, thus varying the position of the disk D, relative to that of thedisk B, so as to enable the two disks to clamp between them ropes, chains, or cables of varying sizes.

When motion is imparted to the shaft A by means ofthe gearing described or in any other convenient way, the disks B D are rotated simultaneously in the same direction, but in different planes, and by virtue of the conical form of the disk D, and the inclination of its plane of rotation the faces of the two disks are constantly approaching and receding from each other, as during their rotation they approach and receded in a circulardireetion from the point at which they are parallel. A rope or cable placed between the disks B D and clamped by moving the threaded sleeve E outward in the manner described will be continuously and strongly clamped on revolving the two disks, the rotation of the disks constantly drawing in the cable at one side of the ma chine and discharging it at the opposite side.

The resistance between the clamping-disks may be varied either while the machine is in motion or at rest, and the clamping device will release its hold upon the cable whether the machine is in motion or not.

In carrying out my invention I do not limit myself to the mechanical details, as represented in the drawings, as they may be modified to adapt them to the different uses to which the machine is applied.

For convenience in guiding the rope or cable to or from the disks, I have provided a snatch-block, \V, which is placed on a slidebar, so, secured to the base of the machine, the said snatch-block being adapted for use at either end of the slide-bar.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a hoisting-machine, the combination of a plain-faced disk and an adjustable beveled disk arranged to rotate in different planes, substantially as herein specified.

2. The combination, in a hoisting-machine, of a bevel-faced disk and a plain disk arranged to rotate in different planes, and means for varying the distance between the disks, as herein specified.

3. In a hoisting-machine, the combination of the plain-faced disk carrying a grooved sleeve and the bevel-faced disk provided with inwardly-projecting lugs and mounted on a sleeve journaled in inclined bearings, the said inwardly-projecting lugs being adapted to enter the grooves of the sleeve carried by the plain-faced disk, substantially as herein specified.

4. In a hoisting-machine, the combination of the shaft A, the adjustable sleeve E,carrying the ears 0 c c c, the rollers d d d d, supported by the ears and arranged at four points in a plane inclined to that of the rotation shaft, the bevel-faced disk D, provided with the circumferentially-grooved sleeve 0, held by the rollers d (1 d d, and having inwardly-projecting lugs b b I) I), and the plain-faced disk B, secured to the shaft A and carrying a longitudinally-grooved sleeve, 0, the grooves of the said sleeve being adapted to receive the lugs of the disk D, substantially as specified.

5. The combination of the frame provided with standards G H I, the threaded sleeve E, supported by the standards G H, and carrying the arms a c c c and rollers d d d d, the nut F, mounted on the sleeve E between the standards G H and provided with armsgg g g, the bevel-faced disk D, provided with inwardly-projecting lugs b I) b b, and having the cireumferentially-grooved sleeve 0, supported by the rollers d d d d", and the plainfaced disk D, fixed to the shaft A and carrying the longitudinally-grooved sleeve 0, substantially as specified.

G. The combination, with the disks B D and supporting and actuating parts connected therewith, of the hinged guard and shield P, substantially as specified.

7. The combination, with the disks B D and shaft A, of the ratchet-wheels K L, secured to the said shaft A, and the pawls M N, adapted to engage the ratchet-wheels, substantially as specified.

In witness whereof I have hereunto sub.- scribed my name this 8th day of September, A. D. 1886.

\VALTER HART.

Vitnesses:

MARY E. MUNN, WILLIAM C. MUNN.

ICO 

